Located in the White Mountains town of North Woodstock Lost River Reservation (as it is most properly known) is set high in Kinsman Notch, One of the area's famous passes. Kinsman Notch lies between Mt. Moosilauke and Mt. Kinsman, about 2000 feet above sea level. When you explore Kinsman Notch and Lost River, you’ll discover a land of remarkable and enduring beauty—a rugged land forged over time by the most powerful forces on earth. Lost River is so-named because the brook draining from the south east part of Kinsman Notch disappears below the surface in the narrow, steep-walled glacial Gorge. The Gorge is partially filled with immense blocks of granite, through which the brook cascades along its subterranean course until it eventually emerges and joins the Pemigewasset River which flows south from Franconia Notch. Serious anglers and youngsters alike will appreciate the outstanding brook trout fishing which is available right here.